Mar 1 motorway

The Autopista al Mar 1 motorway project has a length of 181 kilometres and runs through 13 municipalities. Works include particularly the construction of the second tube in the Occidente Tunnel and the dual carriageway between Medellín (Aburrá – Cauca road link) and Santa Fe de Antioquia. Approximately 3,000 direct and indirect jobs are expected to be created during the construction stage.
Plans for the Occidente Tunnel include the construction of 4.6 km, with nine connecting galleries between the new and the existing tunnel, six for pedestrians and three for vehicle traffic, in addition to a longitudinal ventilation system and lighting and telecommunications systems. The second tube in the Occidente Tunnel will improve transit times and road safety, as it will allow a single direction of traffic.

  • Name: Mar 1 motorway
  • Construction company: Sacyr Construcción Colombia S.A.S
  • Client: Sociedad Concesionaria Desarrollo Vial al Mar 
  • Execution dates: August 2017 - August 2022


Amount (million €)


Stake (%)


Length (km)

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